<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto" <!-- important, you'll have to include this to use the custom xml attributes -->
xmlns:tools="http://schemas.android.com/tools" >
<!-- example of a menu item with an icon -->
<item
android:title="Disable Wifi"
app:showAsAction="always"
app:materialIcon="wifi_off" <!-- This sets the icon, HAS AUTOCOMPLETE ;) -->
app:materialIconColor="#FE0000" <!-- Sets the icon color -->
/>
</menu>